21102201001120 has 24 divisors (see below), whose sum is σ = 49853949865524. Its totient is φ = 8440880400384.

The previous prime is 21102201001111. The next prime is 21102201001129. The reversal of 21102201001120 is 2110010220112.

It is an interprime number because it is at equal distance from previous prime (21102201001111) and next prime (21102201001129).

It can be written as a sum of positive squares in 2 ways, for example, as 20580703267216 + 521497733904 = 4536596^2 + 722148^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21102201001120.

It is not an unprimeable number, because it can be changed into a prime (21102201001129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65944377969 + ... + 65944378288.

Almost surely, 2^{21102201001120} is an apocalyptic number.

21102201001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21102201001120 is an abundant number, since it is smaller than the sum of its proper divisors (28751748864404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21102201001120 is a wasteful number, since it uses less digits than its factorization.

21102201001120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131888756272 (or 131888756264 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21102201001120 its reverse (2110010220112), we get a palindrome (23212211221232).

The spelling of 21102201001120 in words is "twenty-one trillion, one hundred two billion, two hundred one million, one thousand, one hundred twenty".